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. Author manuscript; available in PMC: 2012 Jan 1.
Published in final edited form as: J Am Med Dir Assoc. 2010 Aug 7;12(1):38–43. doi: 10.1016/j.jamda.2010.02.001

Table 3.

Accuracy of the MDS in identifying Medicare payment source

Total number of MDS assessments (% overall accuracy rate+) California New York Ohio Texas
417,246 (75.84%) 519,799 (70.92%) 423,550 (92.79%) 441,122 (68.58%)
Medicare Medicaid Medicare Medicaid Medicare Medicaid Medicare Medicaid
Number of assessments with payment source identified by MDS 235,365 74,584 251,565 124,276 212,074 146,390 221,056 88,689
Number of assessments with payment source identified by claims data 220,681 151,535 227,180 244,888 199,952 161,617 190,033 192,221
Number of MDS assessments validated by the claims data 219,216 73,114 224,666 122,119 199,130 143,876 188,079 85,874
False negative rate (%) 0.66 51.75 1.11 50.13 0.41 10.98 1.03 55.33
False positive rate (%) 6.86 1.97 10.69 1.74 6.10 1.72 14.92 3.17
+

Percentage of the MDS assessments that can be validated by claims data